RE: Paint Stripping Experiment

[Jeff]

Title: Re: Paint Stripping Experiment

caustic is nasty stuff.

I used to work in a place that refurbished pipe-line valves

some of them had white caustic powder in them

everything was ok until you washed your hands

then a layer of skin would peel off :)

 

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]On Behalf Of Steve Lamb
Sent: Wednesday, July 28, 2004 10:09 PM
To: [EMAIL PROTECTED]
Subject: Re: Paint Stripping Experiment

 

This paint stripping system works great on painted solid timber doors, cast iron veranda hardware etc.  I dont know how the alloy wheels would handle 12 hours of caustic solution 

Personally I wouldn't recommend this....sodium hydroxide (caustic soda...NaOH) aggressively attacks aluminium alloys and after extended exposure...well...there may not be much left, esp with a strong solution.  We use NaOH as the base for aluminium etchants, but it will not harm ferrous alloys (steels) and is commonly  a part of alkaline cleaners for steels.  Another note of caution.....even in its 'dry' (undissolved) form, caustic soda can cause serious skin burns.

Methylene chloride based paint strippers will strip paint without damaging the aluminium alloy of the wheel, but those types of strippers are hard to find due to being withdrawn (mostly) because of environmental considerations.

Some wheel paints are epoxy based and there are virtually no readily available strippers that will touch it.   There are epoxy paint strippers still available to the military, but they are carcinogenic, amongst other serious health dangers.  The one we use is called 'yellow peril' for good reason.

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